Physical map of the VvF3'H locus. Map of BAC contig ctg253 carrying the VvF3'H-1 and VvF3'H-2 genes and its anchorage to LG17 of 'Cabernet Sauvignon' and V. vinifera consensus genetic maps. BAC clone 5A23 bears the VvF3'H-1 isogene and was included after PCR anchoring onto the contig using marker BES5A23-FM. Names written in horizontal refer to BAC clones and contigs; those written in vertical refer to markers and genes. The orientation of the contig is arbitrary. Genetic and physical distances are not drawn to scale. The presence of a given marker on a BAC clone is highlighted with the symbol '●'. The symbol 'X' stands for lack of amplification of a given marker in the corresponding BAC clone. BAC clones missing any symbol at marker BES5A23-FM were not tested. Physical localisation of VvF3'H-1 and VvF3'H-2 loci is shown in grey boxes.